【摘要】 用接种密度(n/mL-1)为498×104的淡水小球藻对含Cu2+、Cd2+、Zn2+的水体分别处理,观察了藻细胞对上述3种离子的清除能力,并用金鱼存活检测了结果。结果表明:(1)淡水小球藻对不同密度的Cu2+、Cd2+、Zn2+都有清除能力,Cu2+的密度在0.094~0.484 mol/L时,清除率为61%~84.5%;Cd2+的密度在0.053~0.32mol/L时,清除率为45.90%~78.20%;Zn2+的密度在0.077~0.466 mol/L时,清除率为61.80%~84.80%。(2)淡水小球藻Cu2+、Cd2+和Zn2+良好工作浓度分别为0.094~0.484 mol/L、0.053~0.32 mol/L和0.077~0.466mol/L。其中,Zn2+的清除能达到国家污染物排放的二级标准。更多还原

【Abstract】 The paper reports the removal metal ions capacity of Chlorela vulagris of freshwater with 498×10⁴cultural density(n/mL^-1) and the final residual of metal ions by the survving time of goldfish.Chlorela vulagris of freshwater was cultured in 1% Kangwei medium treated with Cu²⁺,Cd²⁺ and Zn²⁺ at the concentration of 0.094～0.484（mol/L）.The results showed that:（1）Chlorela vulagris of freshwater had the removal capacity to the metal ions of Cu²⁺,Cd²⁺ and Zn²⁺.And the 61%～84.5% of Cu²⁺was removed from the wastewater with the concentration of 0.094～0.484（mol/L） Cu²⁺;the 45.90%～78.20% of Cd²⁺ was removed from the wastewater with the concentration of 0.053～0.32 mol/L Cd²⁺;the 61.80%～84.80% of Zn²⁺ was removed from the wastewater with the concentration of 0.077～0.466 mol/L Zn²⁺.（2）The efficient removal concentration range of Cu²⁺,Cd²⁺ and Zn²⁺were 0.094～0.484 mol/L,0.053～0.32 mol/L and 0.077～0.466 mol/L respectively.After removed from the wastewater,the final residual of 0.466 mol/L of Zn²⁺ had reached the relessing criterion of China.更多还原